LI DEAN Y

PrivateCIK: 1837016
Location

KENILWORTH, NJ

InsiderLI DEAN YCIK 1837016
IssuerMERCK & CO., INC.CIK 310158
Officer· Executive VP & President, MRL
Since Jan 2021
+78.09K
Net shares
Net buyer
$0.00
Total acquired
0
Open market trades
0B · 0S
2
Total transactions
78.09K acquired
Non-Derivative Transactions0
No non-derivative transactions reported
Derivative Transactions2

Restricted Stock Unit

Direct
A · Award
Converts to

Common Stock

19.89K shares

Shares

+19.89K

Strike price

Held after

19.89K

Exercisable

5/5/2026

Stock Option (Right to Buy)

Direct
A · Award
Converts to

Common Stock

58.21K shares

Shares

+58.21K

Strike price

113.15

Held after

58.21K

Exercisable

5/5/2026
Non-Derivative Holdings (Post-Transaction)1

Common Stock

Direct
Shares owned94.43K
Total
94.43K direct94.43K
Derivative Holdings (Post-Transaction)0
No derivative holdings reported
LI DEAN Y — Insider Transaction (Form 4) Filed May 7, 2026 | Finecho